I work in a techy place and were one of the few people in the company who knows how to operate and do some minor troubleshooting of a machine. A guy in another team wanted some of his experiments run on this machine (via his assistant) so they wanted me to train her (the assistant) on how to use it so I spent 1.5 hours showing her how to run it along with troubleshooting some of the errors she got (including fixing a few issues she had) after training. She started off using the pre-defined settings that I gave her (which were created by the machine maker) and then amended some of them to suit her needs with my advice. Sometimes, I'd refer her onto the makers of the machine for things I couldn't answer.
The guy who's experiment it was presented all his data so far on it - including mentioning/thanking his assistant 3 or so times for all the work she's done on running the machine that I trained her on.
I feel a bit put out that I wasn't thanked once by him in the presentation to the wider audience as he's seen how many hours I spent often helping her (yes for some things I referred her on but I did all of the training to show her how to use it and helped with at least 60% of issues she had) - she was always grateful and thankful and he when he saw me working on it with her, would also thank me quickly in person.
I'm not on his team work-wise and was just resourced by them to help with this.
Am I being unreasonable to expect a little mention/thank you (and feel upset I didn't get it) or do they think her thanking me one to one every time I have helped her is enough? Surely, he's also thanked her privately yet thanks her in the presentation too?